The **SD10-100-R** is a high-performance, low-profile power inductor manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). It is widely used in DC-DC converters and power management circuits where space is limited. ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the SD10-100-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 10.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.169 Ω (Typical) | | **Irms (Rated Current)** | 1.08 Amps | | **Isat (Saturation Current)** | 1.15 Amps | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### 2. Physical Construction and Features * **Surface Mount Device (SMD):** Designed for automated pick-and-place assembly. * **Low Profile:** The "SD10" series indicates a specific package size, typically measuring 5.2mm x 5.2mm with a height of only 1.0mm. * **Magnetic Shielding:** The part is shielded to minimize Electromagnetic Interference (EMI), making it ideal for noise-sensitive applications like mobile phones or medical sensors. * **Ferrite Core:** Utilizes a ferrite core material for high efficiency and low core losses at high frequencies. --- ### 3. Application Use Cases The SD10-100-R is commonly found in the following electronic environments: 1. **Buck/Boost Converters:** Used for energy storage in switching power supplies. 2. **Handheld Devices:** Due to its 1.0mm height, it fits perfectly in ultra-thin tablets and smartphones. 3. **LED Drivers:** Provides stable current regulation for backlight circuits. 4. **Computer Peripherals:** Used in SSDs, network cards, and portable hard drives. --- ### 4. Part Number Breakdown Understanding the Eaton/Coiltronics naming convention: | Segment | Meaning | | :--- | :--- | | **SD** | Family Series (Shielded Drum Inductor) | | **10** | Size/Height Code (approx. 1.0mm height) | | **100** | Inductance Code (10 + 0 zeros = 10 µH) | | **-R** | RoHS Compliant / Lead-Free |